DIN2391 Seamless Precision Steel Tube	DIN17175 Cold Drawn Steel Tube	ASTM/ASME A106 Seamless Carbon Steel Pipe
ASTM/ASME A179 Cold Drawn Low Carbon Steel Tube	DIN1629 Seamless Circle Tube	ASTM/ASME A53 Black Steel Pipe
ASTM/ASME A210 Boiler & Superheater Tube	ASTM/ASME A213 Ferritic & Austenitic Alloy Steel Tube	EN10305-1 CNG Steel Tube